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This study is an experiment to see if motor vehicle injury''s external causes can be better recorded and coded by providing training courses and/or checklist form to emergency room nurses and medical chart personnel. 1. Having relatively higher knowledge about E-codes, medical chart personnel showed no difference between pre-and post E-code knowledge tests. However, emergency nurses showed obvious progress in this part. 2. Nurses have higher intention to fill out checklist form than to write down the tradional blank form, but medical chart personnel have no preference to use any kind of form. 3. After receiving training courses and using the checklist form, the first experimental group nurses provided the most complete records. 4. The correctness of E-coding by medical chart personnel was significantly improved when the causes of injury and ID of injured person were complete. The coding errors were formed most frequently for E812 and E816. 5. When the causes of injury and the injured person''s ID were incomplete, the correct code is E819.9, and less than 5% of chart with this situation were coded correctly. Due to the confusion of E811 and E812, we suggest that E811 and E812 can be combined into E811/E812. To separate vehicle accident victims from patients of internal medicine, surgery, gynecology and pediatrics in the emergency room registration book can be a big help in collecting vehicle accident data.
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